install.packages('shiny')
if (getRversion()<'3.5.0')
	{
	# for older R setup
source("http://bioconductor.org/biocLite.R")
biocLite("XVector")
	}else{
# for R>=3.5.0
	if (!requireNamespace("BiocManager"))
		install.packages("BiocManager")
	BiocManager::install("XVector")
	}
